From: Jerome Marchand <jmarc...@redhat.com>

commit 21bda264f4243f61dfcc485174055f12ad0530b4 upstream.

Commit 71e3aac0724f ("thp: transparent hugepage core") adds
copy_pte_range prototype to huge_mm.h.  I'm not sure why (or if) this
function have been used outside of memory.c, but it currently isn't.
This patch makes copy_pte_range() static again.

Signed-off-by: Jerome Marchand <jmarc...@redhat.com>
Acked-by: David Rientjes <rient...@google.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Mel Gorman <mgor...@suse.de>
---
 include/linux/huge_mm.h | 4 ----
 mm/memory.c             | 2 +-
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index a291552..aac671b 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -92,10 +92,6 @@ extern bool is_vma_temporary_stack(struct vm_area_struct 
*vma);
 #endif /* CONFIG_DEBUG_VM */
 
 extern unsigned long transparent_hugepage_flags;
-extern int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
-                         pmd_t *dst_pmd, pmd_t *src_pmd,
-                         struct vm_area_struct *vma,
-                         unsigned long addr, unsigned long end);
 extern int split_huge_page_to_list(struct page *page, struct list_head *list);
 static inline int split_huge_page(struct page *page)
 {
diff --git a/mm/memory.c b/mm/memory.c
index b870c9c..b590106 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -878,7 +878,7 @@ out_set_pte:
        return 0;
 }
 
-int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
+static int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm,
                   pmd_t *dst_pmd, pmd_t *src_pmd, struct vm_area_struct *vma,
                   unsigned long addr, unsigned long end)
 {
-- 
1.8.4.5

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